There have been some weird days at this year’s U.S. Open, but none of them come close to 10 years ago on Friday when Marin Cilic and Kei Nishikori turned the tennis world upside down.

Engaged in the Genoa Challenger, Japanese tennis player Kei Nishikori, at the microphones of "Supertennis", wanted to speak words of praise to Jannik Sinner. More specifically, the Japanese player ...

Ten years after playing in his only Major final at the US Open, Kei Nishikori is not in New York. The Japanese reached the Canada Masters quarter-final in August, achieving his best result in a ...

Kei Nishikori reached the Canada Masters quarter-final, notching his best results in years. The Japanese bravely skipped Cincinnati and the US Open, traveling to Europe and entering his first clay ...

After his victory over Benoît Paire in the fourth round at Roland Garros, Nishikori had a 23-6 record in five-set matches, one of the top marks of the Open era. Rafael Nadal, Roger Federer and a ...

Seventeen years after debuting in Montreal, Kei Nishikori is still capable of notching notable triumphs. The Japanese stunned world no. 11 Stefanos Tsitsipas 6-4, 6-4 in the second round ...

Long before Naomi Osaka burst onto the tennis scene, compatriot Kei Nishikori was establishing himself as the face of the Tokyo 2020 Games, racking up high-profile sponsorship deals. Though he’s ...

Kei Nishikori sets up his two-handed backhand in textbook fashion, and his body coils with the shoulders turned to the net in excess of 90 degrees. This allows him to hit with surprising power and ...

Between the Japan Open, the Grand Slam of Asia/Pacific (a.k.a. the Australian Open), and the IMG-owned Sony Open in Miami, Kei Nishikori has a trio of tournaments to call “home.” And the ...

Japan's Kei Nishikori has added Brad Gilbert as his new traveling coach for the 2011 season. Gilbert, who coached Andre Agassi, Andy Roddick and Andy Murray, will travel with Nishikori to about 15 ...